Sunday, September 25, 2011

Geometry - What is a Decagon?

A decagon is a polygon with 10 sides and 10 angles.





Students can learn more about decagons by clicking on the following links.



~ Decagon  (Wikipedia)

~ CoolMath.com - Polygon: Decagon

~ Math open reference (Decagon) 





Students could read and follow directions to make their own decagon by clicking on the link below.



Students could calculate the sum of the interior angles of a decagon. Each angle in a regular decagon equals 144 degrees.

(Sum of all interior angles: 144 x 10 = 1440 degrees)
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